We beat the heat with help from a cool front — but it put a chill on 60,000 Black Eyed Peas fans.

Mother Nature did her own version of the pop powerhouse’s hit “Boom Boom Pow” — unleashing thunderstorms that forced cancellation of a free Central Park concert tonight that was to also feature country star Taylor Swift.

Though concert organizers let people onto the Great Lawn after hours of waiting and delays due to severe thunderstorms, they began evacuating the area around 8 p.m.

“The lightning caused the cancellation,” said one cop assigned to the benefit for the Robin Hood Foundation.

“This has been a zoo,” said a drenched Joe Dise, 26, an engineer from the Upper East Side.

But banker Brian Hagerman, 55, of Battery Park City, was more philosophical.

“Life is full of disappointments,” he said. “At least we’re not getting hit by lightning.”